Pulmonary Disease, Chronic Obstructive

Not specified

• Department of Pulmonology, Aristotle University of Thessaloniki — Thessaloniki, Greece
• Respiratory Failure Unit, General Hospital "G. Papanikolaou" — Thessaloniki, Greece

• Glittreklinikken — Hakadal, Akershus, Norway
• Glittreklinikken — Hakadal, Norway

• Hôpital Laval — Québec, Quebec, Canada

• Jorvi hospital — Helsinki, Finland
• Skin and Allergy hospital — Helsinki, Finland
• Northern General Hospital — Sheffield, United Kingdom
• Sheffield Children's Hospital — Sheffield, United Kingdom

• Birmingham, Alabama, United States
• Los Angeles, California, United States
• Santa Monica, California, United States
• Naples, Florida, United States

• Izmir Dr Suat Seren Chest Diseases and Surgery Education and Research Hospital, Intensive Care Unit — Izmir, Turkey (Türkiye)

• Hadassah Medical Organization — Jerusalem, Israel

• University Hospital Larisa — Larissa, Thessaly, Greece

• Soonchunhyang University Bucheon Hospital — Bucheon-si, South Korea
• Inje university Pusan Paik hospital — Busan, South Korea
• Chonbuk national university hospital — Chunbuk, South Korea
• Keimyung university dongsan medical center — Daegu, South Korea